I, Tìm lỗi sai và sửa :
1. In the 1920s cinema became an important art form and one of the ten largest industry in the US
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2. In some cases , advertisement make people to buy things that they do not really want.
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3. Geogre told Mary that he has seen this film three times.
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4. It was so nice weather that we would like to go to the beach
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5. Though it is one of the rarest metals, gold was one of the first to be discover.
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6. Although polar bears hunt other animals, they seldom rarely kill people.
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7. Hanoi has been the economic, culture and political center of the Vietnamese.
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8. The earth is the only planet with a large number of oxygen in its atmosphere.
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9. Nearly all chemical agents are harmful to living tissue if enough of them is taken.
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10. By measuring the color of the star, astronomers can tell how hot is it
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